Nut-lock.



V .PATENTED MAR. 10, 1903. W.v 0. STIG-KEL.

NUT LOOK.

APBLIOATION FILED JAN. 2,-1902.

N0 MODEL.

lgazgimg I I I hiorgefysi TO-LITHQ UNITED STATES PATENT OFFICE.

WVILLIAM O. STIOKEL, OF HARMONY, PENNSYLVANIA.

NUT-LOCK.-

SPECIFICATION forming part of Letters Patent No. 722,640, dated. March10, 1903. Application filed January 2, 1902. filerial No. 88,213. (Nomodel.)

To all whom it may concern:

Be it known that I, WILLIAM C. STIoKEL, a citizen of the United States,residing at Harmony, in the county of Butler and State of Pennsylvania,have invented a new and useful Nut-Lock,of which the following is aspecification.

The invention relates to nut-locks.

The object of the invention is to provide a simple and effective devicefor securely looking a nut upon a bolt against possibility of accidentalseparation therefrom, as from jars or vibrations incident to the passageof trains over a track or from other causes, and one which may readilybe operated to permit removal of the nut when desired.

With these and other objects in view, as will appear as the nature ofthe invention is better understood, the same consists in the novelconstruction and combination of parts of a nut-lock, as will behereinafter fully described and claimed.

In theaccompanying drawings, forming a part of this specification, andin which like numerals of reference indicate corresponding parts, thereis illustrated one form of embodiment of the invention capable ofcarrying the same into practical operation, it being understood that theelements therein exhibited may be varied or changed as to shape,proportion, and exact manner of assemblage without departing from thespirit thereof, and in these drawings Figure 1 is a view in sectionalelevation, showing the position of the parts of the device before theyare locked. Fig. 2 is a similar View showing the parts locked. Fig. 3 isa View in elevation looking from the inner face of the nut andexhibiting the locking device associated therewith. Fig. 4 is aperspective detail view of the locking device.

Referring to the drawings, 10 designates the bolt, provided with theusual screwthreads 11. Engaging the threads of the bolt is a cap-nut 21,provided with a central orifice 22 of some polygonal form, preferablysquare, the interior of the nut being furnished with screw-threads 23for a portion of its length.

The locking device (shown in detail in Fig.4) comprises a stem 30 of ashape in cross-section to fit the openingin the head of the cap-nut, one

' end of the stem being provided with a head 31, preferably integraltherewith, and has on its outer face a plurality of spurs 32, bypreference made integral with the head and tempered harder than the boltin order that they may be driven into the end thereof, and thus formseats to holdboth the bolt and nut from turning. By the provision ofthese hardened seat-forming spurs necessity of providing the bolt withorifices for their reception is obviated and the turning of the nut to apredetermined point to bring the spurs and seats into register isrendered unnecessary, as if the spurs are opposite a point on the boltwhere there are no seats these may readily be formed in the mannerdescribed. The stem projects beyond the nut and carries at or near itsouter end a transversely-disposed pin for limiting its longitudinalmovement with relation to the nut and is also provided near the said endwith an indicating-mark 34:, constituting a visual means for determiningthe distance the bolt is to be screwed into the nut or the nut screwedonto the bolt.

In order to hold the spurs normally in engagement with the end of thebolt, a spring 40 is provided, which is coiled about the stem and bearsone end against the head and at its opposite end against the crown ofthe nut.

The operation of the device will be readily understood. The nut isturned upon the bolt until the indicating-mark appears beyond the crownof the nut, and the stem is then struck with a hammer or other implementto drive the spurs into the end of the bolt, and thereby lock the twoparts together, the spring operating positively to prevent accidentalseparation of the spurs from the bolt.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. The combination with a nut, of a looking device slidably associatedtherewith and provided on its inner end with means for form ing theseats in the end of a bolt.

2. The combination with a nut, of a springpressed locking device havingspurs on its inner end to be driven into the end of a bolt.

3. The combination with a nut, of a spring pressedlongitudinally-movable locking device having spurs on its inner end tobe driven into the end of a bolt.

4. The combination with a nut, of a stem provided with a fixed headhaving seat-forming spurs on its inner face.

5. The combination with a nut, of a stern provided on its inner end witha head carrying seat-formin g spurs, and a spring disposed between thesaid head and the crown of the nut. I

6. The combination with a cap-nut having its crown provided with apolygonal opening, of a stem having a spur-carrying head disposed withinthe nut and its outer end projecting beyond the crown of the nut, meansWILLIAM C. STIOKEL.

Witnesses:

J. E. KOOHER, IRA S. ZEIGLER.

